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Main Cloud Types
- Cumulus
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- Stratocumulus
- Altocumulus
- Altostratus
- Cirrus
- Cirrocumulus
- Cirrostratus
- Nimbostratus
- Cumulonimbus
Other Clouds
- Arcus
- Asperitas
- Cap / banner clouds
- Capillatus
- Castellanus
- Cataractagenitus
- Cauda (Tail cloud)
- Cavum (Fallstreak hole)
- Congestus
- Contrail (homogenitus)
- Duplicatus
- Diamond dust
- Distrail
- Fibratus
- Flammagenitus (Pyrocumulus)
- Floccus
- Fluctus (Kelvin-Helmholtz)
- Fractus
- Homogenitus
- Horseshoe vortex
- Humilis
- Incus
- Intortus
- Lacunosus
- Lenticularis
- Mamma
- Morning Glory Cloud
- Murus (Wall cloud)
- Mediocris
- Nacreous
- Nebulosus
- Noctilucent
- Pannus
- Perlucidus
- Pileus
- Praecipitatio
- Radiatus
- Silvagenitus
- Spissatus
- Stratiformis
- 'Supercilium' (not official classification)
- Translucidus
- Tuba / Twister
- Uncinus
- Undulatus
- Velum
- Vertebratus
- Virga
- Volutus (Roll cloud)
Optical Effects
- 22° Halo
- 46° Halo
- Circumhorizon Arc
- Circumscribed halo
- Circumzenithal Arc
- Cloudbow / Fogbow
- Corona
- Crepuscular rays & shadows
- Diffuse arcs
- Green flash
- Glory
- Halos
- Helic arc
- Infralateral arc
- Iridescence
- Lower Sun Pillar
- Lower Tangent Arc
- Moonbow
- Moondogs
- Parhelic circle
- Parry antisolar arcs
- Parry arc
- Parry infralateral arc
- Parry supralateral arc
- Rainbow
- Sub parhelion
- Sub-sun
- Suncave parry arc
- Sun dog (Parhelion)
- Sun pillar
- Supernumerary bows
- Subparhelic circle
- Supralateral arc
- Upper tangent arc
- Wegener arc
Asperitas over Stinson Beach, California, US.
Cirrus over Pateros, Washington, US
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A rain shaft spotted near Guna, Madhya Pradesh, India
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Sunrise over the Sangre de Cristo mountains north of Santa Fe, near Los Alamos, New Mexico, US
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Sunset over Conwy, North Wales
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Cumulonimbus spotted over Lake Michigan, near Chicago, Illinois, US
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Precipitation falling over the North Sea, near Heligoland, Düne, Germany
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A storm system captured over Brighton, Colorado, US
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The shadow of the Cumulus being casted upon higher level clouds, spotted over Coffs Harbour, Australia
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Noctilucent clouds spotted over the Keyhaven River, near Lymington, Hampshire, England
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Sun Dog (Parhelion) spotted over Biggleswade, England
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Signs of a distrail spotted over Teddington, England
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A colourful display following an uncharacteristic day of warm winds (nor'westers in the southern hemisphere), spotted over Geraldine, New Zealand
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Altocumulus over northwest Iran
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Crepuscular rays spotted during the early morning over Madison, Wisconsin, US
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Mammatus (Mamma) spotted over Rome, Italy
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